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US 9,077,023 B2Granted
Cathode active material having manganese oxide and boron, cathode and lithium battery including cathode active material, and method of preparing the cathode active material
AssigneeSamsung SDI Co., Ltd.
InventorsMin-Ju Kim, Yong-Chul Park, Gyeong-Jae Heo, Hyun-Deok Lee, Mi-Ran Song, Jin-Hyoung Seo, Na-Leum Yoo
Life of this patent
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Abstract
A cathode active material including: a lithium manganese oxide of which primary particles has a diameter of 1 μm or more and which has a spinel structure in which an X-ray diffraction (XRD) peak intensity ratio of I(111)/I(311) is 1.0 or more; and a boron element disposed at least one position selected from the group consisting of inside the primary particles and on surfaces of the primary particles.
Claims18
A cathode active material comprising:
- a lithium manganese oxide comprising primary particles having a diameter of 6 μm to 10 μm and which has a spinel structure in which an X-ray diffraction (XRD) peak intensity ratio of I(111)/I(311) is about 1.0 or more;
- and
- a boron element disposed on at least one position selected from the group consisting of inside the primary particles and on surfaces of the primary particles,
- wherein a specific surface area of the cathode active material is from about 0.2 m2/g to about 0.385 m2/g.
1 more element
Dependencies are inferred from the claim text.